Twin-offset disc implement with releasable fastening means connecting dual frames

ABSTRACT

A twin-offset disc implement particularly effective for earth working operations on uneven ground, is disclosed which includes a pair of mobile frames each having an adjustable tongue structure on a forward end thereof for connecting the frames to a prime mover and a fastening member extends between the frames for positioning the frames in side-by-side relation and has opposite ends thereof mounted on the frames to permit independent raising and lowering of the frames during working terraces and uneven ground.

United States Patent 1 Wilbeck [451 Jan. 2, 1973 [54] TWIN-OFFSET DISCIMPLEMENT WITH RELEASABLE FASTENING MEANS CONNECTING DUAL FRAMES [75]Inventor: Robert A. Wilbeck, Reno, Kans.

[73] Assignee: Wilbeck Machine and Manufacturing, Inc., SouthHutchinson, Kans.

[22] Filed: Feb. 22, 1971 [21] App1.No.: 117,343

[52] [1.8. CI. ..l72/313, 172/328, 172/568,

172/587, 280/411 R [51 1 Int. Cl. ..A0lb 23/04 [58] Field of Search..172/245246, 248,

[56] References Cited UNITED STATES PATENTS 2,733,935 2/1956 Whiteley..280/477 2,794,657 6/1957 Anderson ..280/477 3,544,131 12/1970Pennington .....l72/3l1 3,544,130 12/1970 Hayes ..l72/31l 2,709,0855/1965 Stueland ..280/412 3,387,861 6/1968 Bauman ..280/41 2 3,213,94610/1965 Carrick .....172/587 2,469,622 5/1949 Acton ..172/255 2,136,55011/1938 Howard ..172/314 3,292,714 12/1966 Tsuchiya et a1. ..l72/3283,047,075 7/1962 Frank ..172/584 3,515,223 6/1970 Youngberg et a1..172/3l0 3,528,506 9/1970 Drummond 1 72/3 14 3,480,085 11/1969 Tilburyet a1 ..172/311 Primary Examiner-Robert E. Pulfrey Assistant Examiner-C.W. Hanor Attorney-Fishbum, Gold & Litman [57] ABSTRACT A twin-offsetdisc implement particularly effective for earth working operations onuneven ground, is disclosed which includes a pair of mobile frames eachhaving an adjustable tongue structure on a forward end thereof forconnecting the frames to a prime mover and a fastening member extendsbetween the frames for positioning the frames in side-by-side relationand has opposite ends thereof mounted on the frames to permitindependent raising and lowering of the frames during working terracesand uneven ground.

8 Claims, 7 Drawing Figures PATENTEDJAI 2 Ian SHEET 1 BF 3 INVENTOR.Roberr A. Wilbcck monuavs PATENTED JR! 2 I875 SHEET 3 OF 3 INVENTOR-Roberf A. WI I beck ATTORNEYS TWIN-OFFSET DISC IMPLEMENT WITH RELEASABLEFASTENING MEANS CONNECTING DUAL FRAMES The present invention relates tooffset disc implements and more particularly to a twin-offset discimplement having a pair of units maintained in a side-by-side positionand having means engageable with the units to permit same to beindependently raised and lowered.

The principal objects of the present invention are: to provide atwin-offset disc implement having independently suspended and leveledunits maintained in sideby-side relation and which is particularlyeffective for use on uneven ground as well as level ground; to providesuch a twin-offset disc implement capable of accomplishing substantiallytight turns in either direction by raising an inside unit whilemaintaining an outside unit in ground or earth working engagement; toprovide such a twin-offset disc implement which is substantially freefrom sidedraft and which permits simple operation and adjustment in thefield by a single operator; to provide such a twin-offset disc implementwhich effects even penetration for the full width of the soil or earthworking pass; to provide such an implement having a self-leveling deviceon each unit and which may be adjusted independently of the other unit;to provide such a twin-offset disc implement adapted to straddle peaksor valleys of terraces thereby utilizing an independent suspension ofeach unit for proper depth control even in the hardest ground; toprovide such a disc implement wherein the paths of the discs of theunits overlap at the centerline of the twin-offset disc implement toeffect complete tillage of said centerline while neither ridging thesoil or leaving any soil untilled between the units; and to provide sucha twin-offset disc implement which is unique and simple in design,durable in construction, economical to manufacture, easily maintained,positive in operation, and particularly well adapted for the proposeduse.

Other objects and advantages of this invention will become apparent fromthe following description taken in connection with the accompanyingdrawings, wherein are set forth by way of illustration and example,certain embodiments of this invention.

FIG. 1 is a plan view of a twin-offset disc implement embodying featuresof the present invention and having a pair of mobile units inside-by-side relation for working of fields.

FIG. 2 is a side elevational view of the twin-offset disc implement inearth working position and showing a raised position thereof in brokenlines.

FIG. 3 is a rear elevational view of the twin-offset disc implementshowing discs of the units positioned to have paths of end discs overlapat the centerline of the implement.

FIG. 4 is an enlarged fragmentary elevational view of a fastening memberfor maintaining the units in a spaced side-by-side position whilepermitting independent raising and lowering of each of the units.

FIG. 5 is an enlarged fragmentary sectional view showing a universaljoint for each end of the fastening member to permit relative movementin any direction between the fastening member and the units.

FIG. 6 is an enlarged fragmentary plan view of tongue structures of theunits for connection to a prime mover and showing an alternate positionfor each tongue structure in broken lines.

FIG. 7 is an enlarged fragmentary front elevational view.

Referring more in detail to the drawings:

As required, detailed embodiments of the invention are disclosed herein,however, it is to be understood that the embodiments are merelyexemplary of the invention which may be embodied in many forms that aredifferent from those illustrative embodiments presented herein.Therefore, specific structural and functional details disclosed hereinare not to be interpreted as limiting but merely as a basis for theclaims actually defining the scope of the invention. In this regard, itis to be recognized that twin-offset disc implements in accordanceherewith may be embodied in various forms having various mobile supportsand disc gang arrangements and furthermore that such structures may bevariously actuated, leveled, and adjusted, however, the disclosurehereof is presented only as a representative basis for teaching oneskilled in the art to variously employ the present invention invirtually any appropriate detailed structure.

The reference numeral 1 generally designates a twinoffset disc implementparticularly effective for use in earth working operations on terracesand uneven ground and includes a pair of mobile frames 2 and 3, shown asright and left respectively, having adjustable tongue structures 4 and 5mounted on respective forward ends 6 and 7 thereof for connecting sametogether and to a prime mover 8 and cooperating with a fastening member9 for positioning and maintaining the frames 2 and 3 in a side-by-sideposition for working soil in fields. The fastening member 9 connects theframes 2 and 3 and permits independent raising and lowering thereofduring working of uneven ground.

Each of the frames 2 and 3 are similar in construction except for thetongue structures 4 and 5. When the nature of the implement is such thata difference is desired, as for example, an overlapping of therespective working areas, then one of the frames, for example, the rightframe 2 may be slightly shorter than the left frame 3, as laterdescribed. Each of the frames 2 and 3 has laterally spaced side membersIt] and 1 I, shown as inside and outside respectively when the framesare in the side-by-side position. The side members 10 and 11 each havetheir forward ends suitably secured to a forward or front member 12 ofthe frames 2 and 3. A rear member 13 extends between and has oppositeends secured to the side members 10 and II respectively and ispositioned to thereby form a substantially rigid frame.

Independently raising and lowering of the mobile frames 2 and 3 isdesired to selectively move ground or earth working elements into andout of earth working position, therefore, an elongated shaft 14 isrotatably mounted on each of the frames 2 and 3 and has rotatablymounted ground engaging members, such as wheels arranged in pairs 15 andI6, at opposite ends of the elongated shaft 14 respectively to therebymovably support the respective frames 2 and 3. In the illustratedstructure, the elongated shaft 14 is positioned below the side members10 and I1 and is supported in suitable bearings (not shown) mounted inbrackets 17 and 18 depending from the side members 10 and l 1respectively. Arms 19 and 20 depend from opposite ends of the elongatedshaft 14 and each have a suitable axle 21 mounted adjacent a lower endthereof and extending outwardly from opposite sides of said arms forrotatably mounting the respective pairs 15 and 16 of wheels.

The twin-offset disc implement has suitable elements or members mountedon each of the mobile frames 2 and 3 for earth working as the frames aremoved forward by the prime mover 8. The earth working members may haveany suitable shape, such as plows, rakes, chisels, discs, or the like,however, in the illustrated structure, the implement has at least onegang of earth working discs being mounted on each frame with the gangshaving adjacent ends thereof in overlapping relation to effect tillageof the soil on the centerline of the implement 1. In the illustratedstructure, the elongated shaft 14 is positioned intermediate the ends ofthe respective frames 2 and 3 and front and rear gangs 22 and 23respectively of spaced discs are mounted on the frames 2 and 3 andforwardly and rearwardly of the elongated shaft 14.

The front and rear gangs 22 and 23 and the discs 24 thereon for eachmobile frame 2 and 3 are positioned to equalize forces applied to therespective frame during earth working operations whereby each frame andthe implement 1 will move forwardly without sidedraft thereby effectinga simple operation of the implement l.

in the illustrated structure, the front gang 22 on one of the mobileframes, for example, the right frame 2, is positioned forwardly of thefront gang 22 on the other or left frame 3 to permit the adjacent endsof the front gangs 22 to overlap at the centerline of the implement. Thefront gangs 22 on the frames 2 and 3 diverge outwardly and forwardlyfrom the adjacent ends thereof and at substantially equal angles withthe centerline of the implement.

The rear gangs 23 on the right frame 2 is positioned forwardly of therear gang 23 on the left frame 3 to thereby permit the right frame to beslightly shorter than the left frame and the rear gangs 23 on the frames2 and 3 diverge outwardly and rearwardly from the adjacent ends thereofand at substantially equal angles with the centerline of the implementwhereby the sidedraft of the front gangs 22 is equalized by thesidedraft of the rear gangs 23 for each frame and for the entireimplement l.

The front and rear gangs 22 and 23 are adjustable in position on therespective mobile frames 2 and 3 to compensate for a change in thedirection of application of a pulling force, as when one of the mobileframes is used alone for earth working operations. In the illustratedstructure, each gang of discs 24 includes a beam or support member 25having a shaft or pin 26 extending upwardly therefrom to be received ina sleeve 27 mounted on the inside side member of the respective frameand the pin 26 is suitably retained in the sleeve 27, as by having anupper end thereof threaded to receive a suitable nut 28 thereon tothereby pivotally support the inside end of the respective beam orsupport member 25 on the inside side member 10 adjacent the centerlineof the implement l.

The other end of each beam or support member 25 is adjustable along theoutside side member 11 to vary the direction of application of the earthworking force of the respective gang of discs 24 to the mobile framesupporting same to balance the force of the other gang of discs 24 onthe respective mobile unit. In the illustrated structure, a suitableclamp supports the beam 25 in clamped engagement with the respectiveoutside side member 11 and includes a pair of spaced plates 29 held inengagement with the side member 11 and the beam 25 respectively bysuitable fastening members, such as a plurality of spaced bolts 30 eachhaving one or more nuts 31 removably mounted on one end thereof.

Rotation of the elongated shaft 14 is effective to raise and lower therespective frame 2 and 3 and the gangs 22 and 23 of discs 24 mountedthereon. 1n the illustrated structure, a suitable extensible member 32is mounted on each frame and has one end secured to the forward member12 of the respective frame and the other end pivotally connected to ancar 33 extending from the elongated shaft 14 whereby extension andretraction of the extensible member 32 is effective to rotate theelongated shaft 14 to thereby selectively raise and lower the respectiveframe to move the earth working elements or members into and out of anearth working position.

The extensible member 32 is illustrated as a hydraulic cylinder having asuitable piston movable therein to extend and retract a piston rod 34 inresponse to communication of suitable hydraulic fluid to the cylinderadjacent opposite ends thereof. The hydraulic cylinder is connected in aconventional manner by suitable hydraulic lines 35 and 36 adjacentrespective opposite ends to a source of hydraulic power, such as ahydraulic pressure system on the prime mover 8 which is under control ofthe operator thereof. The hydraulic lines 35 and 36 for each extensiblemember 32 are so connected to the source of hydraulic power that eachframe may be independently and selectively raised and lowered.

The tongue structures 4 and 5 are substantially similar in constructionand in the illustrated structure, each includes a base member 37 mountedon the forward or front member 12 of the respective frame and each ofthe base members 37 are pivotally mounted for movement in an are aboutthe forward ends 6 and 7 of the frames 2 and 3 respectively. In theillustrated pivotal mounting, the forward member 12 of each of theframes has depending portions 38 and 39 adjacent respective oppositeends thereof and each base member 37 has spaced ears arranged in pairs40 and 4] adjacent respective opposite ends thereof with the pairs ofcars of the base member 37 being pivotally mounted on the dependingportions 38 and 39 respectively.

Each of the tongue structures 4 and 5 includes a draw member 42 havingone end 43 thereof pivotally mounted on the respective base member 37and extending forwardly therefrom. The one end 43 is preferably mountedadjacent an end of the base member 37 nearest the centerline of thetwin-offset disc implement I when the frames 2 and 3 are positioned inworking side-by-side relation. The draw members 42 each are elongatedmembers having the respective axis thereof forming substantially equalangles with the centerline of the implement 1 when the other or freeends 44 of the draw members 42 are connected together and the units arein side-by-side working position.

Each tongue structure includes an adjustable spreader member 45extending between and having opposite ends thereof pivotally connectedto the base member 37 and the draw member 42 respectively for adjustingan angular relation between the base member 37 and the draw member 42.In the illustrated structure, ears 46 extend from the base member 37 andcars 47 extend from the draw member 42 for pivotally supportingrespective opposite ends of the spreader member 45. The spreader member45 is adjustable in length and is illustrated as having a tubular firstportion 48 and a second portion 49 slidably received therein with theportions 48 and 49 each having a plurality of apertures spacedtherealong with the apertures in the first and second portions 48 and 49being selectively alignable to receive therein suitable fasteningdevices, such as bolts 50 and nuts 51, for holding the spreader member45 in a selected adjusted position.

Free ends of the draw members 42 of the tongue structures 4 and 5 havemeans thereon for effecting a connection between the tongue structures'4and 5 and the prime mover 8. in the illustrated structure, the drawmember connection means includes a clevis assembly 52 mounted on a freeend of one of the draw members 42, for example, the draw member of thetongue structure 4 mounted on the right frame 2.

In the illustrated embodiment, the clevis assembly 52 includes amounting portion 53 suitably secured on the free end 44 of therespective draw member, as by welding, and vertically spaced upper andlower plates 54 and 55 respectively extending forwardly from themounting portion 53 and each having an aperture 56 therein. Theapertures are aligned and positioned to be on the centerline of theimplement 1 when the frames 2 and 3 are in side-by-side position and toreceive a suitable fastening member 57, such as a pin, bolt, or thelike, to pivotally connect the clevis assembly 52 to the prime mover 8.

A towing ring 58 is mounted on the clevis assembly 52 and extendslaterally outwardly therefrom to be releaseably engaged by a pintle hook59 secured on a free end of the draw member 42 of the tongue structure5. When the pintle hook 59 engages the towing ring 58 and the clevisassembly 52 is connected to the prime mover 8 and the fastening member 9is in position between the frames 2 and 3, forward movement of the primemover 8 effects coordinated forward movement of both of the frames 2 and3, such as for earth working of fields and traveling between fields.

The mobile frames 2 and 3 are independently adjusted by a levelingdevice 60, to maintain same in a substantially level position duringearth working operations. In the illustrated structure, each levelingdevice 60 includes a suitable lever 61 which has a lower end thereofconnected to the base member 37 of the respective tongue structure 4 and5 and pivotally mounted on one of the depending portions of the frontmember 12 and an adjustable member 62 extends between and has respectiveopposite ends pivotally connected on an upper end of the lever 61 and anear or arm 63 extending outwardly from the elongated shaft 14.

A suitable handle or crank 64 is mounted on an upper end of theadjustable member 62 for effecting a change in the length thereof, as bya telescopeable joint 65 intermediate the ends thereof, and movement ofthe lever 61 and thereby movement of the base member 37 of therespective tongue structures 4 and 5 to thereby adjust the verticalposition of the respective tongue structure and the vertical position ofthe forward end of the respective mobile frame to thereby level samewhen the earth working elements are in any selected position. Suitableresilient members 66 are mounted on the adjustable member 62 andpositioned on opposite sides of the upper end of the lever 61 to absorbshock during earth working operations.

The fastening member 9 is preferably a substantially rigid memberadapted to resist and withstand both tension and compression as themobile frames 2 and 3 are performing earth working operations. Thefastening member 9 has universal connections with the frames to permitindependent relative movement therebetween. It is preferable that themembers 9 be formed in two sections which may be connected together toform a rigid structure and which permits relative movement between thetwo sections to lock the frames in the sideby-side working position andto release and permit one of the frames to be removed to thereby performearth working operations with only one of the mobile frames.

The illustrated fastening member 9 extends between and is connected tothe mobile frames 2 and 3 for maintaining same in spaced side-by-siderelation and includes a mounting bracket 67 on each of the facing sidemembers 10 of the frames 2 and 3 for supporting respective opposite endsof the fastening member 9, as later described. Each mounting bracket 67includes a pair of spaced plates 68 and 69 secured in clampingengagement with the respective side member 10 by suitable fasteningdevices, such as plurality of spaced bolts 70 having nuts 71 thereon.

The plates facing the centerline of the twin-offset disc implement 1each have upper and lower ears 72 and 73 respectively secured theretoand extending outwardly and toward the centerline of the disc implementl. The ears 72 and 73 of each mounting bracket 67 have aligned aperturestherein to receive a suitable pin 74 for extending through an aperturein the respective end of the fastening member 9 for pivotally mountingthe respective opposite ends of the fastening member 9 on the facinginside side members 10 of the frames 2 and 3.

The ends of the fastening member 9 are formed in ball and socket oruniversal joints to permit relative movement in any direction betweenthe frames and the fastening member. In the illustrated structure, eachof the ends of the fastening member 9 includes a ring portion 75 havinga ball portion 76 therein to form a ball and socket joint. The lowerears 73 of each mounting bracket 67 receive the respective ball portion76 thereon to thereby support same and permit movement of the frames andfastening member in substantially any direction.

In the illustrated structure, the fastening member 9 has separableportions connectable together and includes a first portion 77 having oneend thereof mounted on one of the mounting brackets 67 and a secondportion 78 having one end thereof pivotally mounted on the othermounting bracket 67. The first portion 77 is generally tubular andadapted to receive a free end of the second portion 78 therein and thefastening member 9 includes means on the other or free ends of the firstand second portions 77 and 78 for effecting a releaseable connectiontherebetween. In the illustrated connection means, one of the portions,for example the first portion 77, has a release member 79 pivotallymounted thereon which is engageable with an enlarged portion 80 of thesecond portion 78. The engagement is effective to move and hold thefirst and second portions 77 and 78 together to maintain a selectedspacing between the frames 2 and 3 and form a rigid member extendingtherebetween.

The second portion 78 of the fastening member 9 is guided into the firstportion 77 by a suitable eye or guide 81 mounted on the second portion78 and movable along an extension 82 of the first portion 77. The eye orguide 81 is movable between the free end of the first portion 77 and astop or abutment 83 removably mounted on a free end of the extension 82.

In preparation for using a twin-offset disc implement constructed asdescribed and illustrated, the frames 2 and 3 are positioned inside-by-side relation and the tongue structures 4 and 5 are connectedtogether and to the prime mover 8 and the fastening member 9 isconnected together by the release member 79 engaging the enlargedportion 80 to thereby lock the portions of the fastening member 9together and maintain the frames 2 and 3 in a selected lateral spacingwhile permitting same to be independently raised and lowered andpositioned in a substantially level position by operation of theleveling device 60. The extensible member 32 of each frame isindependently adjusted to effect the desired penetration of the discs 24of the front gang 22 and the rear gang 23 and the frames 2 and 3 areindependently adjusted by the leveling device 60 to position andmaintain the respective frame in a substantially level position duringearth working operations and during travel between fields and the like.

When it is desired to turn the twin-offset disc implement 1, and forparticularly tight turns, either to the right or left, the inside frameis raised by operation of the respective extensible member 32 and theadjustment of the respective tongue structure by operation of therespective leveling device 60. The turn is then completed while leavingthe outside unit in the ground.

When it is desired to use only one of the units, for example, the rightunit, the other or left unit is disconnected from the implement l bydisconnecting the first and second portions 77 and 78 of the fasteningmember 9 and the draw member 42 of the other or left unit from the drawmember 42 of the right unit. The spreader member 45 of the tonguestructure 4 is adjusted in length, as shown in broken lines in FIG. 6,to position the right unit directly behind the prime mover 8 and topermit the prime mover 8 to pull the right unit forward. The other orleft unit may be similarly connected to the prime mover 8 by mounting asuitable tow ring thereon and connecting the pintle hook 59 thereto andadjusting the length of the respective spreader member 45, as shown inbroken lines in H0. 6.

The draw members 42 of the tongue structures 4 and 5 have suitable jacks85 and 86 respectively mounted thereon to support and raise and lowersame as desired during connecting same together and to the prime mover8.

It is to be understood that while I have illustrated and described oneform of my invention, it is not to be limited to the specific form orarrangement of parts herein described and shown.

What I claim and desire to secure by Letters Patent l. A twin-offsetdisc implement comprising:

a. a pair of spaced mobile frames positioned in sideby-side relation andeach having a forward end and laterally spaced side members and at leastone gang of discs, said gangs having adjacent ends thereof inoverlapping relation;

b. means on each of said mobile frames for selectively raising andlowering said respective frame and the gang of discs thereon to movesame into and out of an earth working position, said raising andlowering means on one of said mobile frames being operable independentlyof the raising and lowering means on the other mobile frame;

c. an adjustable tongue structure mounted on the forward end of each ofsaid mobile frames for effecting connection of said frames to a primemover;

each adjustable tongue structure has a base member mounted on a forwardend of the respective mobile frame and a draw member having one endpivotally mounted on said respective base member and an adjustablespreader member having opposite ends pivotally connected to said basemember and said draw member respectively for adjusting an angularrelation between said base member and said draw member;

e. one of said draw members has an assembly mounted on a free endthereof for connection to the prime mover;

f. said assembly has means thereon for releaseably connecting andsupporting the free end of said other draw member whereby forwardmovement of the prime mover effects forward movement of both of saidmobile frames; and

fastening means connected to and extending between said mobile frames,said fastening means having a first elongate member with one end thereofconnected to one mobile frame by a universal joint, said first elongatemember having a tubular portion extending toward the other mobile frame,a second elongate member having a portion slideably and separablyreceived in the tubular portion of said first elongate member andextending therefrom and terminating in an end connected to the othermobile frame by a universal joint, and abutment means on one of saidfirst and second elongate members and a latch means on the other of saidfirst and second elongate members releasably engaged with said abutmentto hold said elongate members together in a rigid form for maintainingthe mobile frames in spaced side-byside relation while permitting saidframes to change in angular relation and each of said frames to beraised and lowered independently of the other.

2. A twin-offset disc implement as set forth in claim 1 including:

a. means connecting said tongue structures to said forward ends of saidrespective mobile frames to permit said tongue structures to move up anddown in an are about the respective forward ends;

b. means on each of said mobile frames and connected to said respectivetongue structure and to said means for raising and lowering said framesfor independently adjusting the vertical position of thereon to movesame into and out of an earth working position;

an ad ustable tongue structure for each frame and mounted on the forwardend thereof;

said respective forward end of each of said frames {means on said tongueimucmres effectto position same in a substantially level position. 0Same to a g t 3. A twin-offset disc implement as set forth in claim 1 batstemng g z a g en i wherein said tongue structures each include: if i:Z i zj z r i iz f r a. a base member mounted on a forward end of the ag a I s 0 ga e thereof connected to one mobile frame by a respectiveframe, each of said base members being universal oint, said firstelongate member having a pivotally mounted for movement in an are abouttubular portion extending toward the other mobile the forward end of therespective frame;

frame, a second elongate member having a portion b. a draw member foreach tongue structure and havslideably and separably received in thetubular mg one end thereof pivotally mounted on said res ective b Semember a d t di f rd] '5 portion of said first elongate member andextendp a H ex Orwa y ing therefrom and terminating in an end connectedtherefrom;

t bl d b f h t to the other mobile frame by a universal oint, and

i atjus a er mam or g J abutment means on one of said first and second 8a an g g s d fd elongate members and a latch means on the other :ivota yconnecte to sai ase mem er an sai of said first and second elongatemembers raw member respechvely of 531d respect've f releasably engagedwith said abutment to hold said gue structure for ad usting an angularrelation elongate members together in a rigid form for between said basemember and said draw member; maintaining the mobile frames in spaced andside relation while permitting said frames to means free end of f of Samdraw members change in angular relation and each of said frames foreffecting a connection between same and the to be raised and loweredindependently of the prime mover. omen 4. A twin-offset disc implementas set forth in claim 3 A twimoffset disc implement as set f th in claim6 wherein said draw member connection means includes: wherein saidtongue structures each comprise;

a. an assembly mounted on a free end of one of said a base member mcumedon a f d end f the l members and havlhg me3h$ thereon for respectiveframe, each of said base members being fecting a connection between saidassembly and i n mounted f movement up d d i the Prime mover; an areabout the forward end of the respective b. a towing ring mounted on saidassembly and exf tending outwardly therefrom; and b. a draw member foreach tongue structure and havc. a pintle hook secured on a free end ofthe other in one end thereof pivotally mounted on said draw member andreleaseably engageable with respective base member and extendingforwardly said towing ring whereby forward movement of the therefrom;prim mover effects forward movement of both of c. an adjustable spreadermember for each tongue said mobile frames. structure and having oppositeends thereof 5. A twin-offset disc implement as set forth in claim 4pivotally connected to said base member and said including adjustablemeans on each of said mobile draw member respectively of said respectivetonframes and connected to said respective base member gue structure foradjusting an angular relation of said tongue structure thereon and tosaid means for between said base member and said draw member; raisingand lowering said respective frame for independ. a clevis assemblymounted on a free end of one of dently adjusting the vertical positionof said respective said draw members and having means thereon forforward end of each ofsaid frames to position same in a effecting aconnection between said clevis assubstantially level position. semblyand the prime mover;

6. A twin-offset disc implement comprising: e. a towing ring mounted onsaid clevis assembly and a. a pair of spaced elongated frames positionedin extending laterally outwardly therefrom; and

side-by-side relation a d ea h h ing a f d f. a pintle hook secured on afree end of the other end and laterally spaced side members; draw memberand releaseably engageable with b. a pair of longitudinally spaced gangsof earth a l ng ing f r ffecting a Connection working discs for eachframe, at least one gang of between Said tongue structures and the Primediscs on one frame having an end thereof in overmove! whereby forwardmovement of the Prime lapping relation with an end of at least one gangof discs on the other frame;

mover effects forward movement of both of said mobile frames.

c an elongated shaft rotatably mcunted on each of A twin-offset discimplement as set forth in claim 7 said frames intermediate the endsthereof and havincluding adjustable means on each of Said mobile imembers depending therefrom and having frames and connected to saidrespective base member means thereon f mtambjy mounting ground cm ofsaid tongue structure thereon and to said elongated gaging members to blsupport said rspec shaft on said respective frame for independentlyadjusttive f ing the vertical position of said respective forward end d.means engaging each of said elongated shafts for each of fh PositionSame in a subsmh' selectively rotating same to thereby raise and tiallylevel position during earth working operations. lower said respectiveframe and gangs of discs

1. A twin-offset disc implement comprising: a. a pair of spaced mobile frames positioned in side-by-side relation and each having a forward end and laterally spaced side members and at least one gang of discs, said gangs having adjacent ends thereof in overlapping relation; b. means on each of said mobile frames for selectively raising and lowering said respective frame and the gang of discs thereon to move same into and out of an earth working position, said raising and lowering means on one of said mobile frames being operable independently of the raising and lowering means on the other mobile frame; c. an adjustable tongue structure mounted on the forward end of each of said mobile frames for effecting connection of said frames to a prime mover; d. each adjustable tongue structure has a base member mounted on a forward end of the respective mobile frame and a draw member having one end pivotally mounted on said respective base member and an adjustable spreader member having opposite ends pivotally connected to said base member and said draw member respectively for adjusting an angular relation between said base member and said draw member; e. one of said draw members has an assembly mounted on a free end thereof for connection to the prime mover; f. said assembly has means thereon for releaseably connecting and supporting the free end of said other draw member whereby forward movement of the prime mover effects forward movement of both of said mobile frames; and g. fastening means connected to and extending between said mobile frames, said fastening means having a first elongate member with one end thereof connected to one mobile frame by a universal joint, said first elongate member having a tubular portion extending toward the other mobile frame, a second elongate member having a portion slideably and separably received in the tubular portion of said first elongate member and extending therefrom and terminating in an end connected to the other mobile frame by a universal joint, and abutment means on one of said first and second elongate members and a latch means on the other of said first and second elongate members releasably engaged with said abutment to hold said elongate members together in a rigid form for maintaining the mobile frames in spaced side-by-side relation while permitting said frames to change in angular relation and each of said frames to be raised and lowered independently of the other.
 2. A twin-offset disc implement as set forth in claim 1 including: a. means connecting said tongue structures to said forward ends of said respective mobile frames to permit said tongue structures to move up and down in an arc about the respective forward ends; b. means on each of said mobile frames and connected to said respective tongue structure and to said means for raising and lowering said frames for independently adjusting the vertical position of said respective forward end of each of said frames to position same in a substantially level position.
 3. A twin-offset disc implement as set forth in claim 1 wHerein said tongue structures each include: a. a base member mounted on a forward end of the respective frame, each of said base members being pivotally mounted for movement in an arc about the forward end of the respective frame; b. a draw member for each tongue structure and having one end thereof pivotally mounted on said respective base member and extending forwardly therefrom; c. an adjustable spreader member for each tongue structure and having opposite ends thereof pivotally connected to said base member and said draw member respectively of said respective tongue structure for adjusting an angular relation between said base member and said draw member; and d. means on a free end of each of said draw members for effecting a connection between same and the prime mover.
 4. A twin-offset disc implement as set forth in claim 3 wherein said draw member connection means includes: a. an assembly mounted on a free end of one of said draw members and having means thereon for effecting a connection between said assembly and the prime mover; b. a towing ring mounted on said assembly and extending outwardly therefrom; and c. a pintle hook secured on a free end of the other draw member and releaseably engageable with said towing ring whereby forward movement of the prim mover effects forward movement of both of said mobile frames.
 5. A twin-offset disc implement as set forth in claim 4 including adjustable means on each of said mobile frames and connected to said respective base member of said tongue structure thereon and to said means for raising and lowering said respective frame for independently adjusting the vertical position of said respective forward end of each of said frames to position same in a substantially level position.
 6. A twin-offset disc implement comprising: a. a pair of spaced elongated frames positioned in side-by-side relation and each having a forward end and laterally spaced side members; b. a pair of longitudinally spaced gangs of earth working discs for each frame, at least one gang of discs on one frame having an end thereof in overlapping relation with an end of at least one gang of discs on the other frame; c. an elongated shaft rotatably mounted on each of said frames intermediate the ends thereof and having members depending therefrom and having means thereon for rotatably mounting ground engaging members to movably support said respective frames; d. means engaging each of said elongated shafts for selectively rotating same to thereby raise and lower said respective frame and gangs of discs thereon to move same into and out of an earth working position; e. an adjustable tongue structure for each frame and mounted on the forward end thereof; f. means on each of said tongue structures for effecting connection of same to a prime mover; g. fastening means connected to and extending between said mobile frames, said fastening means having a first elongate member with one end thereof connected to one mobile frame by a universal joint, said first elongate member having a tubular portion extending toward the other mobile frame, a second elongate member having a portion slideably and separably received in the tubular portion of said first elongate member and extending therefrom and terminating in an end connected to the other mobile frame by a universal joint, and abutment means on one of said first and second elongate members and a latch means on the other of said first and second elongate members releasably engaged with said abutment to hold said elongate members together in a rigid form for maintaining the mobile frames in spaced side-by-side relation while permitting said frames to change in angular relation and each of said frames to be raised and lowered independently of the other.
 7. A twin-offset disc implement as set forth in claim 6 wherein said tongue structures each comprise: a. a base member mounted on a forward end of the respective frame, each of said base memBers being pivotally mounted for movement up and down in an arc about the forward end of the respective frame; b. a draw member for each tongue structure and having one end thereof pivotally mounted on said respective base member and extending forwardly therefrom; c. an adjustable spreader member for each tongue structure and having opposite ends thereof pivotally connected to said base member and said draw member respectively of said respective tongue structure for adjusting an angular relation between said base member and said draw member; d. a clevis assembly mounted on a free end of one of said draw members and having means thereon for effecting a connection between said clevis assembly and the prime mover; e. a towing ring mounted on said clevis assembly and extending laterally outwardly therefrom; and f. a pintle hook secured on a free end of the other draw member and releaseably engageable with said towing ring for effecting a connection between said tongue structures and the prime mover whereby forward movement of the prime mover effects forward movement of both of said mobile frames.
 8. A twin-offset disc implement as set forth in claim 7 including adjustable means on each of said mobile frames and connected to said respective base member of said tongue structure thereon and to said elongated shaft on said respective frame for independently adjusting the vertical position of said respective forward end of each of said frames to position same in a substantially level position during earth working operations. 